Liquid-fuel pump.



PATENTED MAY 3, 1904.

0. J"x ROOT.

LIQUID FUEL PUMP.

APPLICATION FILED '0013. 6, 19.03.

K0 MODEL,

UNITED STATES Patented May 3, 1904.

ORLANDO J. ROOT, OF MOL'INE, ILLINOIS.

LIQUID-FUEL PUMP.

SPECIFICATION forming part of Letters Patent No. 759,193, dated May 3, 1904.

Application filed October 6, 1903. Serial No. 175,984. (No model.)

To aZZ whom, it may concern.-

Beit known that I, ORLANDO J. R001, a citizen of the United States, residing at Moline, in the county of Rock Island and State of Illinois, have invented certain new and useful Improve- 11161113811) Liquid-Fuel Pumps, of which the following is a specification.

This invention relates to gasolene or vapor engines, and pertains especially to liquid-fuel pumps for such engines.

The prime object of theinvention is to pro vide means whereby the ordinary or usual stuffing-box or packing-gland through which the pumpplunger rod works is dispensed with, so that all possibility of leakage around the rod is avoided and the danger of fire or explosions from such leakage or from the usual gland-packing material is entirely eliminated.

A further object of the invention is to provide a by-pass for oil that may escape by way of the plunger-rod to return such oil to the supply-reservoir, whereby the usual waste of oil is avoided.

WVith these objects in view the invention consists in the novel construction and arrangement of parts, and resides especially in a pumpcylinder having a countersunk head forming a drip-chamber, a by-pass extending from said chamber the length of the pump in communication with the supply-reservoir, and a plug screwed into the top of the pump-cylinder through said chamber and having a central bore for the plunger-rod and an orifice leading from said bore into said chamber.

In the accompanying drawings, forming part of this application, Figure 1 is an elevation of the pump, showing it applied to the base-reservoir of a gasolene or vapor engine. Fig. 2 is a detached elevation of the pump. Fig. 3 is a vertical sectional view or the pump. Fig. 4 is a cross-sectiontaken on the plane i11 dicated by the dotted line XX, Fig. 3. Fig. 5 is a detail elevation of the screw or gland plug. Fig. 6 is an elevation of the valve-plug.

The same numeral references denote the same parts throughout the several views of the drawings.

The cylinder 1 is screwed onto the top of a hollow post 2, which is in communication with the oil-reservoir base 3 of a gasolene-engine.

The cylinder 1 has the usual discharge-opening 4, to which is attached a pipe 5, connected with a gasolene-mixer, and the cylinder has a valve-plug 6, having an external cut-out or groove 7. A ball or check valve Tis operated in the plug 6. An oil-stem 8 is attached to the said plug and is provided with a strainer or wire-gauze 9, as usual. The head of the cylinder is countersunk or bored, so as to form a drip-chamber 10. A hollow column 11 is made on the cylinder, so as to form a by-pass 12, extending from the chamber 10 to the cutout or groove 7 of the valve-plug 6. so that the by-pass 12 and the said groove form a direct passage from the drip-chamber to the hollow post, which is in communication with the reservoir-base. The top of the column 11 is provided with an air-vent13, so that the gasolene or oil may drop by gravity through said passage. The pump-plunger 14 is of the type commonly used in this class of pumps and has a rod 15, provided with the usual spring 16.

The gland-plug 17 has an inner projection 18, screwed into the top 01- the cylinder 1 through the chamber 10, a nut 19, fitting over the chamber 10 to close it, and an outer stem 20. A bore or reamed hole 21 is made through the plug 17 for the plunger-rod, and an ori fice 22 is made through the projection 18 to connect the bore 21 with the chamber 10.

It will be observed that the gland-plug closes the head of the cylinder and tightly covers the chamber, so that there may be no leakage at these points, that the reamed bore for the plunger-rod affords smooth working of the latter without friction, and that the drippings fromsaid rod are caught by the chamber and carried back to the oil-reservoir, so that there is no loss of oil or possibility of explosion from oildrippings or combustion of gland-packing, as in the usual pumps of this class.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a liquid-fuel pump, the combination, with the pump-cylinder having a by-pass terminating above and below the plunger-stroke, of a gland-plug extending into and closing the top of the cylinder with a portion having an orifice and projecting above the cylinder to connect the bore of the gland with the by-pass.

2. In a liquid-fuel pump, the combination, with the pump-cylinder having a head-chamber, and a by-pass leading from the chamber, of agland-plug having a bore for the pumprod and closing the cylinder and chamber, and an orifice leading from the bore to the chamber.

3. In a liquid-fuel pump, the combination, with the cylinder having a chamber at its head and a column on the cylinder forming a bypass from the chamber, of a gland-plug having a projection extending through the chamber and closing the cylinder-head, a flange covering the chamber, a bore through the plug for the pump-rod, and an orifice through the portion of the projection positioned in the chamber.

,4. In a liquid-fuel pump, the combination, with the cylinder having a chambered head, a valve-plug closing the foot of the cylinder and having an oil-channel formed therein, and a by-pass leading from the chamber to the said channel, of a gland-plug closing the chamber and the head of the cylinder so as to position a portion thereof in the said chamber, said portion having an orifice connecting the plugbore with the said chamber.

5. The combination, with the cylinder hav- 6. A rod-gland comprising a plug having a central bore for the rod, an inner PIOJQCtIOIl provided with screw-threads for attaching the gland, an outer stem, and a nut between the stem and the projection, with an orifice lead ing from the bore through the said projection.

7. A pump-cylinder having a column thereon forming a by-pass from one end of the cylinder to the other, a gland-plug separating the.

cylinder and one end of the by-pass and having an orifice forming a passage from the pump-rod to the by-pass, and a valve-plug separating the cylinder and the other end of the by-pass and having a channel leading from the by-pass.

In witness whereof I hereunto set my hand in the presence of two witnesses.

ORLANDO J. ROOT.

WVitnesses:

N. O. MILLER, H. A. SovERHiLL. 

